The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 17, 1980
Filed:
Sep. 18, 1978
Sergei I Kuchuk-Yatsenko, Kiev, SU;
Valery G Krivenko, Kiev, SU;
Nikolai V Podola, Kiev, SU;
Vadim P Krivonos, Kiev, SU;
Boris L Chev, Kiev, SU;
Other;
Abstract
The invention relates to a device for welding workpieces that have a large cross-sectional area, as well as for cases of high welding power requirements. The device in accordance with the invention comprises a mechanism for continuously displacing the workpieces being welded with a controlled drive, a mechanism for imparting to the workpieces additional reciprocating motion, a welding transformer, and a means for controlling the speed of the drive. The drive speed control means includes a welding-current pulse shaper coupled to the output of a current transformer, the latter being included in the primary circuit of the welding transformer and a welding-current pulse-length setter. The latter and the output of the pulse shaper are coupled to a comparator, the output whereof is coupled to the drive control circuit. In the course of flasing of the butt ends of the workpieces being welded, the welding-current pulse length is measured during each reciprocation period, and, depending on the error signal furnished by the comparator, the speed of continuous displacement of the workpieces being welded is adjusted.